Safety device foe attachments to boilers



i (N0 Model.) -4 2 Sheets-.Sheet SAFETY DEVICE ATTAUHMENTS T0 BOILERS.

(No Model.) 2 Sheets-Sheet 2. L SCHUTTB.

SAFETY DEVICE POR ATTAGHMENTS T0 BOILERS.-

N0. 554,738. y Patented Peb. 18, 1896.

v l'LI d Z FIG.

NiTED STATES ATENT OFFICE.

LOUIS SCHUTTE, OF PHILADELPHIA, PENNSYLVANIA.

SAFETY DEVICE FOR ATTACHMENTS TO BOILERS.

SPECIFICATION forming part of Letters Patent No. 554,738, dated February 18, 1896.

' Application filed November 8, 1895. Serial No. 568,277. (No model.)

To all whom if may concern:

- Be it known that I, LOUIS SCHUTTE, a citi- Zen of the United States, residing' in the city of Philadelphia, in the county of Philadelphia, in the State of Pennsylvania, have invented a new and Improved Safety Device for Attachments to Boilers and other Receptacles, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to attachments or co'nnections made with boilers or other receptacles for fiuid under pressure, and has for its object to provide a simple and efficient device by which in the event of a break in the attachment the flow of fluid to the attachment can be at once and from a distance diverted. This I accomplish by inserting between the boiler or other receptacle and the device adapted to receive fluid under pressure therefrom a device in the nature of an ejector, so arranged as to receive its impelling-jet from the boiler, and connected with the device or attachment to be protected by an orifice through which the ejector will draw fluid when in normal operation, and I provide the delivery end of the ejector with a take-off pipe and place in this pipe a stopcock by which it can be opened orclosed at will, the closing of the cock cutting off the work of the ejector as such and convertingit into a mere conduit through which the fluid from the boiler or other receptacle finds its way to the device or attachment before mentioned. Obviously the take-off pipe can be of any convenient length and stop-cock situated at a distance from the device to be protected, so that it can be opened without necessitating an approach to the point where a fracture may have occured.

While my improvement may be applied to a great number of devices connected with boilers or other receptacles it is primarily adapted for use with water-level gages for boilers, and is so illustrated in the drawings,

forming part of this specification, and in which my invention is illustrated.

In the drawings, Figure l is a side elevation, partly in section on the line y y of Fig. 2, of a water-gage provided with my improvement, Fig. 2 being a cross-section on the line a: of Fig. l. Fig. 3 is a side elevation, partly in section on the line o o of Fig. 4, of a modified construction of gage and gage-protecting device, Fig. 4 being a cross-section on the line e' e of Fig. 3; and Figs. 5, 6, and are respectively side elevations of three other modifications of my device.

The gages may be of any desired pattern and construction, my invention not being concerned with the special construction of the gage proper and being adapted, as shown in Figs. l, 5, and 7, for use in4 connection with any standard commercial gage. As shown, the gage is made up of two heads A and A', each having a chamber a, into which the steam or water from the boiler passes, said chamber connecting with a central chamber a2 by a valve-seat orifice a3.

F indicates the glass tube secured in the heads A and A as usual, and D D'represent valves by which the orifice a3 can be closed at will, B indicating a plug at the top of the chamber a2 of the upper head A and C a stopcock at the bottom of the corresponding chamber of the head A, a a being the screwthreaded ends of the heads A and A by which they are attached to the boiler or other device to or through which connection is made.

EE, &c., are guard-rods to protect the glass tube F.

G is a water column or chamber connecting at G' and G2 with the boiler below and above the water-line thereof. As shown in Figs. 1 and 2 this chamber is formed separate from the gage, and as shown in Figs. 3 and 4 it is formed as part of the same casting.

H H are ejector-nozzles, having jet-orifices h, which, as shown in Figs. l, 2, 8, and 4, connect with the top and bottom of the chamber G, and h' indicates an orifice leading into the nozzle H. at an angle to the jet-orifice h and connecting with the top and bottom of the gage, the arrangement and disposition of the orifices h and h being such that a jet entering the tube I-I through the orifice 7i will cause a suction through the orifice h.

I and I/ indicate the take-off pipe for the ejector-nozzles, and J indicates a stop-cock in this take-off pipe.

K, Fig. 2, indicates a strainer which may be employed to prevent foreign matter getting into the gage-tube.

IOO

In Figs. 5, 6, and 7 the water chamber or column G is entirely dispensed with, heads G3 and G4, Figs. 5 and 6, connecting with the boiler below and above the water-line and embodying in themselves ejector-nozzles H and conduits g4 leading through the bottom and top of the gage-tube and connecting through orifices h with the nozzle II. In Fig. 6 the heads Gr3 and Gf'L are cast solid with the heads A and A respectively, while in the construction shown in Fig. 5 the union is by a joint. Fig. 7 shows still another modification, in which the ejector-tubes are formed as a part of the integral casting with the takeoff tube I, but otherwise the construction is essentially similar to those already described.

It is obvious that in each case the cock .I being closed the ejector-tubes cannot serve as ejectors and the fluid from the boiler simply passes through the orifices 71, and h" to the gage. It is also obvious that as soon as the cock J is opened the ejectontubes will take up their normal function, j ets passing through the tubes IVI acting to create a suction in the orifice 7L and the parts connected to such orifice. In practice the stop-cocks J would be situated at a safe distance from the gage-tube, so that in case a'gage-tube were broken the operator could open the cock without approaching the broken tube or be endangered bythe water and steam issuing therefrom. rlhe effect of opening the cock would be to at once cause all steam and water to pass into the tubes I I' instead of into the broken gage rendering it safe to approach the point of fracture and replace the broken tube, the valves I) being closed where t-hey are provided.

It is obvious that my invention is applicablc not only to steam-boilers but to any receptacles containing fluid under pressure and not only to water-level gages but to practically any devices attached to such receptacles where there is danger of fracture.

I-Iaving now described my invention7 what I claim as new, and desire to secure by Letters Patent, is-

l. A receptacle for fluid under pressure in combination with a device adapted to receive fluid under pressure therefrom, an ejector arranged to receive an im pelling-j etfrom the receptacle aforesaid and to draw fliiid from the device before mentioned, an offtake-conduit leading from the delivery end of the ejector anda stop-cock in said conduit Whereby when said cock is closed the fluid from the receptacle liows through the ports of Ithe ejector into the device connected therewith.

2. In combination with a device adapted to be connected to a receptacle containing fluid under pressure and to receive the fluid under pressure therefrom, a by-pass conduit as I having a stop-cock J, a nozzle II opening freely into conduit I, a jet-passage 7L opening from the receptacle into nozzle II and a passage 7L' opening from the side of the nozzle II into the device first above mentioned.

3. In combination with a water-gage for steam-boilers, two ejectors, each adapted to receive an impelling-jet from the boiler and connected respectively Wi th the top and bottom of the gage so as to draw fluid therefrom when in operation, a take-oil conduit leading from the delivering ends of the ejectors and a stop-cock in said con duit whereby when said cock is closed the ejectors become mere conduits from the boiler to the gage.

LOUIS SCHUT' 14). lVitn esses:

CHARLES F. ZIEGLER, FRANcIs T. CI-IAMBERs. 

